/*!	 layer_skeletondeformation.h
**	 SkeletonDeformation layer
**
**	......... ... 2014 Ivan Mahonin
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifndef __SYNFIG_LAYER_SKELETONDEFORMATION_H
#define __SYNFIG_LAYER_SKELETONDEFORMATION_H

#include "layer_meshtransform.h"
#include <synfig/pair.h>
#include <synfig/bone.h>
#include <synfig/polygon.h>

namespace synfig
{
/*!	\class Layer_SkeletonDeformation
**	 Class of the SkeletonDeformation layer.
*/
class Layer_SkeletonDeformation : public Layer_MeshTransform
{
    // Layer module: defines the needed members to belong to a layer's factory.
    SYNFIG_LAYER_MODULE_EXT
private:
    // Parameter: (list) Bones
    ValueBase param_bones;
    // Parameter: (Point)
    synfig::ValueBase param_point1;
    // Parameter: (Point)
    synfig::ValueBase param_point2;
    // Parameter: (Integer)
    synfig::ValueBase param_x_subdivisions;
    // Parameter: (Integer)
    synfig::ValueBase param_y_subdivisions;

    struct GridPoint;
    static Real distance_to_line(const Vector &p0, const Vector &p1, const Vector &x);
    void prepare_mask();

protected:
    virtual rendering::Task::Handle build_rendering_task_vfunc(Context context) const;

public:
    typedef std::pair<Bone, Bone> BonePair;

    // Default constructor
    Layer_SkeletonDeformation();
    // Destructor
    virtual ~Layer_SkeletonDeformation();
    // Returns a string with the localized name of this layer
    virtual String get_local_name()const;

    //	Sets the parameter described by \a param to \a value. \see Layer::set_param
    virtual bool set_param(const String & param, const synfig::ValueBase &value);
    // Get the value of the specified parameter. \see Layer::get_param
    virtual ValueBase get_param(const String & param)const;
    // Gets the parameter vocabulary
    virtual Vocab get_param_vocab()const;

    void prepare_mesh();
}; // END of class SkeletonDeformation

}; // END of namespace synfig

#endif